I have read up on it a little, but could not find anything that was set in stone. I have read that Calcium is less abrasive than Magnesium...but Magnesium is better for extended OCI as far as TBN retention goes. For a 6 month 5K mile OCI, should I be concerned about the abrasive properties of the Magnesium? Or is this just a myth? I have Mobil 1 Advanced Fuel Economy 0w20 on deck for the Accord, and the add pack has just about equal levels of Calcium and Magnesium.
The Calcium vs. Magnesium question...
- Thread starter gregk24
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I'm pretty uptight about what I run in things, but you take it up quite a few notches. For that short of an interval I would not sweat any of it.
I just past 200K on my old Taurus. I had the valve covers, timing cover, oil pan off and it looked pretty clean. For the last 10 years I've been doing oil changes in the low to mid teens miles wise.
I don't do used oil analysis very often either.
I just past 200K on my old Taurus. I had the valve covers, timing cover, oil pan off and it looked pretty clean. For the last 10 years I've been doing oil changes in the low to mid teens miles wise.
I don't do used oil analysis very often either.
Originally Posted By: oilboy123
I'm pretty uptight about what I run in things, but you take it up quite a few notches. For that short of an interval I would not sweat any of it.
I just past 200K on my old Taurus. I had the valve covers, timing cover, oil pan off and it looked pretty clean. For the last 10 years I've been doing oil changes in the low to mid teens miles wise.
I don't do used oil analysis very often either.
It's just a question. Thanks for your feedback anyway.
I'm pretty uptight about what I run in things, but you take it up quite a few notches. For that short of an interval I would not sweat any of it.
I just past 200K on my old Taurus. I had the valve covers, timing cover, oil pan off and it looked pretty clean. For the last 10 years I've been doing oil changes in the low to mid teens miles wise.
I don't do used oil analysis very often either.
It's just a question. Thanks for your feedback anyway.
Originally Posted By: gregk24
I have read up on it a little, but could not find anything that was set in stone. I have read that Calcium is less abrasive than Magnesium...but Magnesium is better for extended OCI as far as TBN retention goes. For a 6 month 5K mile OCI, should I be concerned about the abrasive properties of the Magnesium? Or is this just a myth? I have Mobil 1 Advanced Fuel Economy 0w20 on deck for the Accord, and the add pack has just about equal levels of Calcium and Magnesium.
No you shouldn't Not for a 6 mo/5k run. Not even for a 1 year/10K run. You are seriously overthinking this. Especially in a K24 equipped Honda. They will run on vegetable oil for 200K.
I have read up on it a little, but could not find anything that was set in stone. I have read that Calcium is less abrasive than Magnesium...but Magnesium is better for extended OCI as far as TBN retention goes. For a 6 month 5K mile OCI, should I be concerned about the abrasive properties of the Magnesium? Or is this just a myth? I have Mobil 1 Advanced Fuel Economy 0w20 on deck for the Accord, and the add pack has just about equal levels of Calcium and Magnesium.
No you shouldn't Not for a 6 mo/5k run. Not even for a 1 year/10K run. You are seriously overthinking this. Especially in a K24 equipped Honda. They will run on vegetable oil for 200K.
Originally Posted By: zuluplus30
Originally Posted By: gregk24
I have read up on it a little, but could not find anything that was set in stone. I have read that Calcium is less abrasive than Magnesium...but Magnesium is better for extended OCI as far as TBN retention goes. For a 6 month 5K mile OCI, should I be concerned about the abrasive properties of the Magnesium? Or is this just a myth? I have Mobil 1 Advanced Fuel Economy 0w20 on deck for the Accord, and the add pack has just about equal levels of Calcium and Magnesium.
No you shouldn't Not for a 6 mo/5k run. Not even for a 1 year/10K run. You are seriously overthinking this. Especially in a K24 equipped Honda. They will run on vegetable oil for 200K.
So if I am over thinking it, why do others on here even mention that Magnesium is abrasive?
Originally Posted By: gregk24
I have read up on it a little, but could not find anything that was set in stone. I have read that Calcium is less abrasive than Magnesium...but Magnesium is better for extended OCI as far as TBN retention goes. For a 6 month 5K mile OCI, should I be concerned about the abrasive properties of the Magnesium? Or is this just a myth? I have Mobil 1 Advanced Fuel Economy 0w20 on deck for the Accord, and the add pack has just about equal levels of Calcium and Magnesium.
No you shouldn't Not for a 6 mo/5k run. Not even for a 1 year/10K run. You are seriously overthinking this. Especially in a K24 equipped Honda. They will run on vegetable oil for 200K.
So if I am over thinking it, why do others on here even mention that Magnesium is abrasive?
How do people who never pay attention to what oil or filter they are putting on their car and just have it serviced at the quickie lube ever survive? Their engines go 200-300 thousand miles and the only thing they worry about is what's for lunch. In your case Greg, I'd only worry about add packs if you were really extending your OCI - which you will never do. The short answer to the question is - relax, either way, the oil companies have figured it out. They know what works, neither additive will damage your engine. What's for lunch?
you ll get better property of you use a combination of calcium and magnesium .and it will likely taker less total to vhave same effect at the beginning and will likely have higher number at then end
Originally Posted By: bigt61
How do people who never pay attention to what oil or filter they are putting on their car and just have it serviced at the quickie lube ever survive? Their engines go 200-300 thousand miles and the only thing they worry about is what's for lunch. In your case Greg, I'd only worry about add packs if you were really extending your OCI - which you will never do. The short answer to the question is - relax, either way, the oil companies have figured it out. They know what works, neither additive will damage your engine. What's for lunch?
I'm not not relaxed
just more curious than anything. I have seen used oil analysis of this oil, it's good stuff! Having lasagna btw
How do people who never pay attention to what oil or filter they are putting on their car and just have it serviced at the quickie lube ever survive? Their engines go 200-300 thousand miles and the only thing they worry about is what's for lunch. In your case Greg, I'd only worry about add packs if you were really extending your OCI - which you will never do. The short answer to the question is - relax, either way, the oil companies have figured it out. They know what works, neither additive will damage your engine. What's for lunch?
I'm not not relaxed
At short OCI's, I prefer calcium like you find in Pennzoil.
For extended drain and TBN retention, magnesium seems to be the hot ticket.
I don't do extended drains, so that puts me in the first camp with the exception of the Euro spec oils required for my BMW's.
I don't believe the wear we're talking about with magnesium is significant so it probably really doesn't matter.
It is interesting discussion and I'm sure more learned opinions will step in and continue it.
For extended drain and TBN retention, magnesium seems to be the hot ticket.
I don't do extended drains, so that puts me in the first camp with the exception of the Euro spec oils required for my BMW's.
I don't believe the wear we're talking about with magnesium is significant so it probably really doesn't matter.
It is interesting discussion and I'm sure more learned opinions will step in and continue it.
Honestly, these are the kind of questions that should be discussed on BITOG. Discussing trivial things aren't really what BITOG is all about. Talking about analyzing why certain lubes use certain adds are. I, for one, like the question. I am hoping that there is some good discussion on the matter. Unfortunately, I don't think there are enough qualified posters on this forum to be able to fully discuss the relationship between calcium and magnesium when it is in the context we are discussing.
You seem to be getting more of the "who cares" people that don't care what they run in their cars. Although, I do agree that any lube with the correct spec would work fine. I also like to analyze the reasoning behind what is in the lubes.
You seem to be getting more of the "who cares" people that don't care what they run in their cars. Although, I do agree that any lube with the correct spec would work fine. I also like to analyze the reasoning behind what is in the lubes.
After researching used oil analysis, it seems that the magnesium does seem to be a little more aggressive at cleaning than the calcium is. That being said, it appears to be more abrasive. Wear metals on average seem to be just fine with both, but a small percentage higher with high magnesium lubes. I wouldn't say that lubes are solely better for longer periods with magnesium adds though. There are plenty of lubes with high calcium that run great for extended OCI's with great used oil analysis.
So, for me, I would be willing to run either, but I think I like the high calcium oils (PP, QS, SOPUS) etc. better than the high magnesium and calcium (M1, Castrol Edge). But, I have ran them both and think they both are effective adds for keeping your internals clean.
So, for me, I would be willing to run either, but I think I like the high calcium oils (PP, QS, SOPUS) etc. better than the high magnesium and calcium (M1, Castrol Edge). But, I have ran them both and think they both are effective adds for keeping your internals clean.
Remember that some of those oils you listed are longer drain oils and they aren't allowed to have sulphated ash levels through the roof. Look at the synthetic diesel HDEOs with the ACEA specs, which have TBNs of greater than 10, with SA of under 1.0. They tend to stick to a magnesium package.
I apologize if I trivialized your question. I did not intend to. I sometimes ask questions that seem trivial to others.
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